Phylum Poifera

INTRODUCTION:
Phylum Porifera is the simplest and is considered the most primitive of the multicellular animals.
NAME:
The word "Porifera" is derived from Latin.Porus means "pore" and ferra means "to bear".So,the Poriferas are pore-bearing animals,commonly called the
"sponges".
HABITAT:
All Poriferas are aquatic.Out of total 5000 species,150 species live in fresh water while all others are marine.
SIZE:
The Poriferas range in size from few millimeter wide to more than one meter tall.They are macroscopic i.e., can be seen with naked eye."Scolymastra joubini"-a barrel like glass sponge of An…